Brake-shoe



G. BULLOCK.

Brake Shoe.

ed Oct. 5, 1880..

Patent head.

Warren TATES ATENT OFFIcE.

BRAKE-SHOE.

SPECIFICATION forming part of Letters Patent No. 232,933, dated October5, 1880. Application filed July 22. 1880. (No model.)

To all whom it may concern Be it known that I, GEORGE A. BULLooK, acitizen of the United States, residing at Norwich, in the county of NewLondon, State of Connecticut, have invented a new and useful Improvementin Brake-Shoes, which improvement is fully set forth in the followingspecification and accompanying drawings, in which- Figure 1. is avertical section of the brake embodying my invention. Figs. 2 and 3 areviews of contiguous parts of the liner and Fig. 4 is a horizontalsection thereof in line a: m, Fig. 1. Fig. 5 is a horizontal section inline y y, Fig. 1.

Similar letters of reference indicate corresponding parts in the severalfigures.

My invention relates tobrake-shoes; and it consists in the constructionand combinations of the devices hereinafter duly set forth.

Referring to the drawings, A represents the head or stock, to which thebrake-beam is bolted, and B the liner attached to said head.

On the back of the liner, at opposite ends thereof, are twosimilarly-formed sockets, C C, cast with or secured to the liner, andopen toward each other, as more clearly shown at a a, Fig. 2. The innertaces of the side walls, I) b, of said sockets are dovetailed, and eachcrosspiece 0 has a diagonal opening, 6?, for the passage of thefastening-key D.

The ends of the neck-piece A of the head A, which are adapted to enterthe sockets C, are dissimilar in width, the upper end, 0, beingdovetailed, so as to lock with the socket C, and the lower end,f,adapted to enter the socket C without locking with its dovetail wallsI), it being remembered that the two sockets are similar inconstruction, while the two ends a fare different.

In order to connect the liner and head the end 0 of the head is movedinto the socket C through the open end a, so as to look there with. Theend f of the head is then pushed home into the socket C by a motiondirectly toward the liner. The key D is now inserted through the openingdof the socket C and presses against the back of the end f of the headA. As the opening d is diagonal, and

the key is in contact with the end of the head,

the key is wedged between the head and socket, and thus forces the headfirmly against the liner, separation of the two parts and rattlingjoints between them being thereby prevented. Both ends of the head arenow securely connected to the liner, the end 6 by its dovetailconnection with the socket C, and the end f by the key D, the side wallsof the socket C preventing lateral displacement of the end f. lVhen theshoe is hanging in position the liner may be readily removed bywithdrawing the key D and drawing the lower portion of the liner fromthe socket C, which offers no obstruction to such movement, and raisingthe shoe so that the socket C clears the end a. The liner, as removed,may now be reversed and reapplied. The socket C now alone is slippedover the dovetailed end e, and the lower portion of the liner pressedagainst the end f, so that the socket C, now below, receives said end.The key D is now wedged as before, only that in this case it is passedthrough the opening d of the socket C, because it is always inserted inthe opening of the lower socket.

The back of the liner may have an opening to receive a projection or lugon the middle portion of the neck A of the head, and provide a centralconnection and bearing for said head and liner.

Having thus described my invention,whatI claim as new, and desire tosecure by Letters Patent, is

1. The liner having on its back two similar dovetailed sockets, C C, incombination with the head having two ends, of, dissimilar in width, oneof them being dovetailed, substantially as and for the purpose setforth.

2. The liner having two similar sockets, C C, with an opening, (I, ineach, in combination with the head having two dissimilar ends, 6], oneof which is dovetailed, and the key D, substantially as and for thepurpose set forth.

GEORGE A. BULLOCK.

Witnesses FRANK D. FULLER, H. C. MoFFITr.

